● The electrons present in the Outermost shell of an atom are known as the valence electrons.
The electrons present in the Outermost shell of an atom are known as the valence electrons.
These are the electrons on an atom that can be gained or lost in a chemical reaction.
The presence of valence electrons determines the element's chemical properties and whether it may bond with other elements.
An atom with one or two valence electrons is highly reactive, because the extra valence electrons are easily removed to form a positive ion
An atom with one or two valence electrons fewer than a closed shell is also highly reactive, because of a tendency either to gain the missing valence electrons.